oss_mixer_value
#define SNDCTL_MIX_READ __SIOWR('X', 5, oss_mixer_value)
#define SNDCTL_MIX_WRITE __SIOWR('X', 6, oss_mixer_value)
status_t OpenSoundDeviceMixer::SetMixerValue(oss_mixer_value *value)
status_t OpenSoundDeviceMixer::GetMixerValue(oss_mixer_value *value)
status_t GetMixerValue(oss_mixer_value *value);
status_t SetMixerValue(oss_mixer_value *value);
oss_mixer_value mixval;
oss_mixer_value mixval;